Pressure hinged lever system for



Aug. 22, 1944. MARZOLI 2,356,416

PRESSURE HINGED LEVER SYSTEM FOR CYLINDERS 0F SLIVER OR LAP DRAWING FRAMES FOR USE IN SPINNING TEXTILE FIBERS OF VARIOUS KINDS Filed May 22, 1941 2 Sheets-Sheet L Fig. 1

' INVENTO Rh,

Luia! MARZOL-QI. .BY 81W ATTO R N EV.

Aug. 22, 1944. MARZOLI 2,356,416

PRESSURE HINGED LEVER SYSTEM FOR CYLINDERS OFSLIVER OR LAP DRAWING FRAMES FOR USE IN SPINNING TEXTILEv FIBERS OF VARIOUS KINDS Filed May 22, 1941 2 Sheets-Sheet 2 Fig. 3

I I. H

' I'Jfi I --llil INVENTOR1.

Patented Aug. 22, 1944 UNITED STATE-S PATENT v OFFICE;

YFRAMES FOR USE IN SPINNING TEXTILE FIBERS OF VARIOUS KINDS Luigi Marzoli, .Palazzoloesullf Oglio, Italy vested in the Alien Property Custodian Application May 22, 1941, Serial .No.

.-:: InItaly June 3, 1940 '6 Claims. Cl 19-135) In the 1 drawing fraxiies'of various types heretoforeknown the top or pressure cylinders are pressed on the lower cylinders under a direct pressureproduced by a weight carried by a hooke'd rod-connected to the side bushes of each cylinder. 5' by displacing the-hook I2 along the lever 9, whicl' 1 In this arrangement aweight-is required for each is provided with a plura of holes l 'r which cylinderline and'each' cylinder head. This may be' fitte'd the pin receiving the hook. It is' weight in-the sliver drawing frame now in use is thus possible to adjust thepressure accordingto' of'about" 9 kilos] Eight of these weights being her a e of the fiber tobe treated. a required r c head. each head isjweighted 10 The lower side of each lever 9 is provided with with about 7 k o s I 1 o a cam surfaceM cooperating with an eccentric It has been proposeg to eliance the weight b3 A gnzivo lietilletgclialillrlectsdlr (:1 gregrgozgg legal/ using a lever for eac coupe of cyin ers an v Y 7 therefore four weights ofconsiderable size for gggf fgg gg fgx f g g 5 1 :555; 55 3:2 ach cylinder'group. Y u f The' object of this invention is to reduce subi g e Ffer i eeg b E e stantially the weight of the pressure members in an e s or? on a e t; m d order ,to reduce the cost of manufacture and obn d of the drawing frame n eto fi tain anneasier control of the pressure onjthedraw 2o iz eg egygi gi F m, 12 n rods 2 to W u ed cline." V v i F fidel? to this invention the pressure .on In h example how a 'g ou i ow g eachrcylin'der group is obtained by means of twoeylinders comprises edjeieent cpuplosof; 9 small weights, each of'about 2.50 kilos actihg on F?! cylinders, mi With- ,a 'e n 'yt e loo the, top cylinders through a systemof multiplye -r m.e h o ide W}??? ing levers. IV V v. i iett i o o of r o o of Each end of the groups of drawing cylindersis eyhnders 1S P 5 e h e 1 provided with crosspieces bearing on the supth le ,aetmg on the ether-end ef'said couples porting bushes of the couples .of .top cylinders. 32 g g eg 9r n gg The crosspieces are connected with tie-rods swivf, S e. 06 ac Soon 0 everso elled on the ends of a rocker arm centrally piv- W mders are thus dlsplaqed parallel to m: oted to a fork connected to the lever fulcrumed Selves. at its end, near to the fork attachment, to afixed W 22 f g g l g frame pi n ng te ti e iiiiitt fih?iii???ffiii t tifi fiifieifififeie3 fiooro 'o oooooroooo too and bottom 71 according; to h desiredipressum 35 dgrs whitclh arehrotatably supported one above the o-erwi eac to clin erbein Vrticll-m V- i i g g z E ai s: Z 1 giggz 9; able andforce ap ialging means as ocia te w i th eecen mes eg 1; g in 1 the ends of each top cylinder for transmitting a hinged lever sys m an opera e r y a re downwardly directed force thereto whereby to Operating member; the shver or lap 5 e 40 move each top cylinder into pressurecont'act with leased from the presiure' of top cylinder its cooperating bottom cylinder, the combination through an easy and elmple loflev er. means connected to said force applying annex-ed ,drawmgs e y e means for exerting Pressure, eh the cylinder s said amPIe emeedneentof th mvenfmen' lever means comprising levers carried by said lap t 1,15asldemeWParmaHy-Sectmned 545 drawing frame, each lever being fulcrurned at 35 e Cress seetmni e one of its ends, on said frame below said cylinders V 1S dle'grammainc r i' ow andbeing connected between its fulcrum and'its Fig. 4-is a diagrammatic perspective view of a f e a of Said 'i pm n detail Weight raisin? l the levers in a pair of levers extending inoppo- Refe rin t the drawmes, l 18 the firawmg site directions and towards each other from their frame, 011 which are fitted 0n d bearings the fulcrums and having their free ends locatedbeps f uples of l wer rawin cylinders low the cylinders, said levers lying in substan- A top cylihderB-rotatably mounted on vertically tially vertical planes which are substantially par movable end brushes d cooperates with eachof allel to the longitudinal axes ofsaid cylindersfi the lower cylinders. A rcrosspiece 5- carrying a 2; In a lap drawing framefor spinning textile tie rod. 6, rests.on the adjacent bushes of each fibers, cooperating top and bottom cylinders couple of top cylinders. The lower end of the tie which are 'rotatably supported' one above the rod 6 is hinged to the end of a rocker arm 1 cenother, each top cylinder being also supported for trally pivoted on the forked head of a screw 8 anvertical movement, force applying means assochored to a lever 9 of the second order near its 60 ciated with each end of each top cylinder for fulcrum or pivot ID, by means-of which the lever is hinged to the drawing frame, f

A weight ll ishun'gto the free end of the 1e: ver 9; the position of the weight may be adjusted pairs of levers carried by said drawing fram'e,- each lever being fulcrumed at one of its ends on; said drawing frame at a position below said cyl-- inders, means connecting each lever of a pair of levers between its fulcrum and its free end to one of said force applying means for transmitting a force to the force applying means to which the lever is connected when downwardly acting pressure is exerted on the lever, the free end of each with said group'whereby to transmit a force to said force applying means to which the lever is connected when downwardly acting pressure is exerted on the lever, the levers for each group of cylinders extending in opposite directions and towards each other from their respective fulcrums, means for exerting downwardly acting lever being located below said cylinders, said levers in each pair extending in opposite directions andv towards each other from their respective fulcrums and-lying in planes which are substantially parallel to the longitudinal axes of said cylinders, means for exerting downwardly acting pressure on the free end of each lever, and means carried by the frame in contact with each lever for raising the levers against the action of the means exerting pressure thereon whereby to rehave the cylinders from pressure contact.

3. In a lap drawing frame for spinning textile fabrics, cooperating top and bottom cylinders which are rotatably supported one 'above the other, each top cylinder being alsosupported for vertical movement, force applying means associated with each end-of eaeh top cylinder for transmitting a downwardly directed force thereto whereby'to moveeach top cylinder into pressure -COntaGt 'With-'itS cooperating bottom cylinder, pairs of levers carried bysaiddraw-s ing; frame, each lever being fulcrumed at one of its ends on said frame at a position below said cylindersand having its free endrloc ated below the cylinders, means connectinjg'each lever of a pair of levers between its fulcrum and its freeend to one of said ,force apr n'e means fortransmitting a forceto the force applying means to which the lever is connected when downwardly acting pressure is exerted on the lever, the levers in each pair extending in opposite directions towards each other from their respective fulcrums, means for exerting downwardly acting pressure on the free end of each lever, a drum eccentrically and rotatably mounted on said drawing frame below each pair of levers and in contact therewith, and actuating means for rotating each drum whereby to raise and lower said levers at will. 7 4. In a lap drawing frame for spinning textile fibers, aligned groups of cooperating top and bottom cylinders, support means for rotatably mounting said cylinders whereby each top cylinder is supported over a bottom cylinder, each top cylinder being also supported for vertical movement, force applying means associated with each endof each top cylinder for transmitting a downwardly directed force thereto whereby to move each top cylinder into pressure contact with its cooperating bottom cylinder, a pair of levers for each group of cylinders, said levers being carried by said drawing frame, each lever .of each pair being fulcrumed at one of its ends at Ya position below and near an end of the group of cylinders with which it is associated and having its free end located below the opposite end of the group of cylinders with which it is associated, means connecting each lever for each group of cylinders between its fulcrum-and its free end to one ofsaid force applyin means associated pressure on the free end of each lever, an eccentrically and rotatably mounted drum carried by the drawing frame below and in contact with the levers for each group of cylinders and a lever I system hinged to said drawing frame and connected to each drum for simultaneously turn-,

ing said drums whereby to raise and lower the levers connected to said groups of cylinders.

5. In a sliver or lap drawing frame for spinning textilefibers of various kinds, two pairs of lower cylinders, fixed supports for said, lower cylinders, two pairs of top cylinders arranged for cooperation with said lower cylinders,-vertically movable supporting end bushings for said top cylinders, cross pieces each resting on a pair of adjacent end bushings, a separate fork located under opposite ends of each-pair of saidcylinders, a rocker arm for, each fork, each rocker arm being pivoted intermediate its endto a separate fork, aplurality of pairs of stirrups, one stirrup of each paincbn'necting an endof a rocker armwith an intermediate portion of one of said cross pieces, a first pressure leverand a secondpressure lever each connected nearits fulcrum to a separatefork, eachpressure lever being fulcrumed. at ori end on said frame at aposition below said cylinders and having its free end located belowthe cylin-I ders, the second pressurelever having. its free end extending towards and in a direction or positeito that of said first pressure lever, movable weights on the free ends of said pressure levers, a'ndmeans acting on said levers for raising'at will said weights and for releasing the pressure produced by saidweights on said top cylinders.

6. In a sliver or lap drawing frame for spinning textile fibers of various kinds, two pairs of lower cylinders, fixed supports for saidlowercylinders, two pairs of top cylinders arranged for cooperation with said lower cylinders, vertically movable supporting end bushings for said top cylinders, cross pieces each resting on a pair of adjacent end bushings, a separate fork located under opposite ends of each pair of said cylinders, a 'rocker arm pivoted intermediate its end to a separate fork, a plurality of pairs of stirrups, one stirrup of each pair connecting an' end of a rocker arm with an intermediate portion of one ofisaid cross pieces, a first pressure' lever and a second pressure lever each connected nearits fulcrum to' aseparate fork, each; pressure lever being fulcrumed at: one end onlsaidframe 'atz'a position belowsaid cylinders,- the s'econd pressure lever having its free end extending towards and in a direction opposite to that of said first-pressure lever, and said pressure levers havingtheir respective free ends located belowsaidcylinders, movable weights on the free ends of said pressure levers, a drum eccentrically and rotatably mounted on said frame below and in contact with said levers, and a hinged leversystem for rotatingsaid eccentric drum for the pur pose of raising. said weights. 

